The building of a house in an unknown locality suggest that the beholder will accomplish good deeds and that he will secure for himself a favourable position in the hereafter.... Islamic Dream Interpretation

1- The unknown in dreams is that which has been hidden from us, or that which we have deliberately made secret. This may be the ‘occult’ that is, knowledge which is only available to initiates. It may also be information that we do not normally need, except in times of stress.

2- When we are conscious of the unknown in dreams, we should try to decide whether it is threatening or whether it is something we need to know and understand. It is the way we handle the information rather than the information itself which is important.

3- The hidden or the Occult remains both unknown and unknowable unless we have the courage to face it. This we can often do in dreams.... Ten Thousand Dream Dictionary

Material aspects: The unknown in dreams is that which has been hidden from us, or that which we have deliberately made secret. This may be the ‘occult’ – that is, knowledge that is only available to initiates. It may also be information that we do not normally need, except in times of stress.... Dream Meanings of Versatile

Psychological / emotional perspective: When we are conscious of the unknown in dreams, we should try to decide whether it is threatening or whether it is something we need to know and understand. It is the way we handle the information – rather than the information itself – which is important.... Dream Meanings of Versatile

The growing of any unknown greenery in a place where it does not normally grow such as a house or masjid, suggest that a man will come along either to seek in marriage the hand of his daughter or to establish a business partnership.... Islamic Dream Interpretation

Seeing an unfamiliar horse which he does not own nor mounts means that he is a man of good repute and high honour.

If he sees such a horse entering his neighbourhood or house it means a powerful and honourable person will make his appearance in that neighbourhood or house.

If he sees such a horse leaving such a neghbourhood or house it means a man with same qualities mentioned above will leave the neighbourhood or house either by way of going away for good or death.... Islamic Dream Interpretation

If a person sees himself in a house whose foundation, location and occupants are not known to him, it symbolizes his abode in the Hereafter every feature of such a house-eg. Narrowness, spaciousness, ugliness, beauty – is an identical replica of his abode in the Hereafter. Subsequently, this is a reflection of his deeds and actions in the world.... Islamic Dream Interpretation